Results 301 to 310 of about 378,095 (341)

Effect of assembling errors on the diffraction efficiency for multilayer diffractive optical elements

Applied Optics, 2014
Based on the expression function of diffraction efficiency, and the phase delay function of diffractive optical elements (DOEs), the diffraction efficiency for multilayer diffractive optical elements (MLDOEs) is described with tilt and decenter assembling errors.
Changxi Xue, Suet To, Hongfang Yang, Long Gao, Xin Nie, Tianchen Liu   +5 more
openaire   +3 more sources

Design of multilayer diffractive optical elements with polychromatic integral diffraction efficiency

Optics Letters, 2010
What we believe to be a new method for designing multilayer diffractive optical elements (MLDOEs) for wideband with consideration of polychromatic integral diffraction efficiency (PIDE) is presented. The benefit of this method is that the maximum PIDE over the entire waveband for MLDOEs can be obtained.
Changxi Xue, Qingfeng Cui
openaire   +3 more sources

Diffraction efficiency of absorption gratings

Optical and Quantum Electronics, 1983
The diffraction efficiency of absorption gratings is investigated using a coupled multiwave analysis. For the four-wave case the analytical expressions for the signal amplitudes are given. The applicability of the four-wave approximation is also included.
openaire   +2 more sources

Efficient optimization of diffractive optical elements based on rigorous diffraction models

Journal of the Optical Society of America A, 2001
An efficient optimization strategy for the design of diffractive optical elements that is based on rigorous diffraction theory is described. The optimization algorithm combines diffraction models of different degrees of accuracy and computational complexity.
Michael A. Fiddy, Markus E. Testorf
openaire   +3 more sources

Diffraction efficiency change of multilayer diffractive optics with environmental temperature

Journal of Optics, 2014
In this paper, the effect of an environmental temperature change on multilayer diffractive optical elements (MLDOEs) is studied in terms of the diffraction efficiency and the polychromatic integral diffraction efficiency (PIDE). The relation between the diffraction efficiency of MLDOEs and environmental temperature is analyzed theoretically, and ...
Mingxu Piao, Qingfeng Cui, Bo Zhang, Hao Zhu, Changxi Xue   +4 more
openaire   +2 more sources

Effects of manufacturing errors on diffraction efficiency for multilayer diffractive optical elements

Applied Optics, 2011
The effect of manufacturing errors on diffraction efficiency for multilayer diffractive optical elements (MLDOEs) used in imaging optical systems is discussed in this paper. The relationship of diffraction efficiency and depth-scaling errors are analyzed for two different cases: the two relative depth-scaling errors change in the same sign and in the ...
Tao Liu, Liangliang Yang, Qingfeng Cui, Changxi Xue   +3 more
openaire   +3 more sources

Diffraction grating with rectangular grooves exceeding 80% diffraction efficiency

Infrared Physics, 1993
Abstract A novel design for a surface relief grating with rectangular grooves is presented. The first reflected diffraction order shows experimentally 84% diffraction efficiency for a metallic grating. The required binary surface relief can be manufactured by using one single microlithographic fabrication step similar to standard processes in ...
H. Haidner, Johannes Schwider, John T. Sheridan, Norbert Streibl, Martin Collischon, P. Kipfer, Martin Marz, J. Hutfless   +7 more
openaire   +2 more sources

Enhancement of diffraction efficiency for optical gratings

Canadian Journal of Physics, 2000
A method to increase the diffraction efficiency for optical gratings is proposed. Using a simple glass plate sitting parallel to the top of a grating surface, one can form an air gap between the surfaces of the grating and the glass plate to reflect a grazing-incident light beam and make diffraction through multiple reflection of the beam between the ...
openaire   +2 more sources

Diffraction efficiency of binary optical elements

SPIE Proceedings, 1990
We examine the role of processing errors on diffraction efficiency of binary optical elements and the validity of the Fourier model to predict diffraction efficiency. We show that mask alignment error can significantly degrade efficiency. Models based on the Fourier theory can adequately predict both the magnitude of diffraction efficiency and its ...
Scott A. Nelson, J. Allen Cox, Bernard S. Fritz, James W. Bergstrom, James C. Lee, Thomas R. Werner   +5 more
openaire   +2 more sources

Efficiencies of diffraction gratings by an electromagnetic theory

Journal of Electron Spectroscopy and Related Phenomena, 1996
Abstract Diffraction efficiencies of several different types of gratings are estimated by using an electromagnetic theory. The result shows that they are in good agreement with observed ones.
Eiji Ishiguro, Hiroyuki Kushibe, Noboru Hiroshige, Mikio Mimura, Tomohiko Sasano   +4 more
openaire   +2 more sources